CVE-2024-33662
📋 TL;DR
Portainer before version 2.20.2 uses an improper encryption algorithm in its AesEncrypt function, potentially allowing attackers to decrypt sensitive data. This affects all Portainer deployments using vulnerable versions. The vulnerability stems from insufficient cryptographic strength in data protection mechanisms.
💻 Affected Systems
- Portainer
📦 What is this software?
Portainer by Portainer
⚠️ Risk & Real-World Impact
Worst Case
Attackers could decrypt stored credentials, API tokens, and configuration data, leading to complete compromise of the Portainer instance and potentially underlying Docker/Kubernetes environments.
Likely Case
Unauthorized access to encrypted data within Portainer, potentially exposing sensitive configuration information and credentials.
If Mitigated
Limited impact with proper network segmentation and access controls, though encrypted data remains vulnerable to decryption.
🎯 Exploit Status
Exploitation requires access to encrypted data and cryptographic analysis capabilities.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.20.2
Vendor Advisory: https://github.com/portainer/portainer/issues/11737
Restart Required: Yes
Instructions:
1. Backup your Portainer data. 2. Stop the Portainer service. 3. Update to Portainer 2.20.2 or later. 4. Restart the Portainer service. 5. Verify the update was successful.
🔧 Temporary Workarounds
Restrict Access Controls
allImplement strict network access controls to limit who can access the Portainer instance.
Monitor for Unusual Activity
allIncrease monitoring of Portainer logs and network traffic for suspicious access patterns.
🧯 If You Can't Patch
- Isolate Portainer instance from internet and restrict internal network access
- Implement additional encryption layer for sensitive data stored by Portainer
🔍 How to Verify
Check if Vulnerable:
Check Portainer version via web interface or API. Versions below 2.20.2 are vulnerable.Check Version:
docker exec portainer portainer --versionVerify Fix Applied:
Confirm Portainer version is 2.20.2 or higher after update.📡 Detection & Monitoring
Log Indicators:
- Unusual authentication patterns
- Multiple failed decryption attempts
- Unexpected access to encryption functions
Network Indicators:
- Unusual outbound connections from Portainer instance
- Traffic patterns suggesting data exfiltration
SIEM Query:
source="portainer" AND (event="authentication_failure" OR event="encryption_error")